Blade anchoring wedge



J. w. SCHMIDT BLADE ANGHORING WEDGE Oct. 19, 1937.

Filed Nov. 30, 1956 I M m Inventor I (2 4 MWZM (Ittornegs Patented a.19, 1937 2,096,472

UNITED STATES PATENT OFFICE BLADE ANCHORING wanes Joseph W. Schmidt,Milwaukee, Wis., assignor to Wetmore Reamer 00., Milwaukee, Wis., acorporation of Wisconsin Application November 30, 1936, Serial No.118,324 R U E D 2 Claims. (Cl. 29-105) This invention relates toimprovements in with the tool blade 5. The opposite rotation of bladeanchoring wedges. The invention has parthe adjusting screw will forcethe wedge from its ticular application to wedges for the retention ofbinding engagement with the tool blade and will blades insertedin areamer or other rotary cutting gradually withdraw the wedge to aposition where 5 ol. the tool may readily be removed and replaced.

It is the primary object of the invention to Even when the wedgeis freeof the tool it canprovide a blade anchoring wedge with adjusting notfall from the bore 6, in which it operates, means which is not onlyadapted to seat the wedge since the threads of the adjusting screw willrefor the retention of the tool, but is also adapted main in engagement,both with the wedge and to provide support for the wedge when the wedgewith the tool body 3, to maintain an operative 10 is free of the tool,and to release the wedge from connection between these parts. clampingengagement with the tool and thereby Any desired means, such as thepolygonal socket to obviate the necessity for using a hammer for I2, maybe provided for the reception of a wrench. the release of the wedge.suitable for the manipulation of the adjusting More specifically, Ipropose to adjust the wedge screw. 15

in both directions by manipulation oi a right Iclaim: and left handscrew, in threaded-engagement both 1. In a device of the characterdescribed, the with the wedge and the body of the tool, wherebycombination with a tool body having a longituto accomplish the functionsaforesaid. dinal slot upon its periphery and provided with In t drawing:an inclined bore intersecting the slot, of a tool 20 Figure 1 is afragmentary side elevation of a blade in the slot, a generallycylindrical wedge rotatable cutting tool embodying the invention.reciprocable in the bore and having one beveled u e 2 s an e d e evationt e t o a p i'ace finished for clamping engagement with said tion hebeing broken away t a section exp sblade, an adjusting screw for saidwedge having ing the wedge adjusting means. 1 right and left handthreaded portions, one of said 25 Like parts are identified by the samereference portions being of reduced diameter as compared charactersthroughout the several views. with the other, one of said portions beingin y m r ved tool mpris s a ody portion 3 threaded connection with thewedge, and the having t ble s ts 4 i ts perip ery fo the reother beingin threaded connection with said body.

Dtion of renewable tool blades 5. 2. The combination with a tool body,having 30 e bOreS 5 intersect t Slots 4 and are a peripheral slot andprovided with a wedge openq pped with gene ally cyli d c Wedge ingintersecting the slot and having an inclined s havh'lg their facesflattened at 3 for face converging inwardly toward the slot, of a toolgagemeht w the respective blades blade in the slot, a wedge in theopening bearing From the bottom of each bore a there extends againstsaid face and said blade, and an adjusting 35 mm the body of the tooltapped socket 9 to screw for the wedge having right and left handreceive the smaller threaded end of an adjustin threaded portions, thportion of said screw enj f j 3 223223 55; ggi f gg i ig zffi gg gagedin the wedge being of relatively large diamter and a portion of saidscrew engaged in the larger end of the adjusting screw. e t 40 Therespective ends of the adjusting screw have being smaller diameter thelarger right a d left h threads, as illustrate; In portion of said screwhaving a terminal socket consequence, the r t ti of th screw 1n oneadapted toreceive awrench for the manipulation direction will draw thewedge I downwardly into 01 h wbore 6 to seat its face 8 in clampingengagement JOSEPH W. SCHMIDT. 45

